78115226 has 16 divisors (see below), whose sum is σ = 138232320. Its totient is φ = 32397840.

The previous prime is 78115223. The next prime is 78115231. The reversal of 78115226 is 62251187.

It is a super-2 number, since 2×78115226² = 12203977066062152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78115192 and 78115201.

It is not an unprimeable number, because it can be changed into a prime (78115223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89561 + ... + 90428.

It is an arithmetic number, because the mean of its divisors is an integer number (8639520).

Almost surely, 2^78115226 is an apocalyptic number.

78115226 is a deficient number, since it is larger than the sum of its proper divisors (60117094).

78115226 is a wasteful number, since it uses less digits than its factorization.

78115226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180029.

The product of its digits is 6720, while the sum is 32.

The square root of 78115226 is about 8838.2818466034. The cubic root of 78115226 is about 427.4761584004.

The spelling of 78115226 in words is "seventy-eight million, one hundred fifteen thousand, two hundred twenty-six".